How should trench cover quality control, we are mainly three aspects to this: one, the good customs of raw materials: steel raw materials into the factory inspection is the most important part, which determines the trench cover the final shaping and performance, the company has strict quality inspection standards, the choice of quality raw materials to ensure the field frequency of performance and quality. 2, strictly control the production and design aspects of trench cover manufacturers, according to the company's production standards, not a mistake. The introduction of advanced production equipment and production technology, improve the quality of existing products, trench cover, efforts to develop new products. And in accordance with market needs, develop a detailed product development process to ensure the completion of the development of new products in the shortest possible time! 3, good finished factory inspection, after the completion of the company's finished, there will be a professional inspector for quality testing, to detect whether a product specification, such as the product failed to be re-produced. Gold mesh Hebei Airlines Co., Ltd. is a large scale in the northern trench cover production-oriented enterprises, the products throughout the country, and won praise customers. "High standard, fine, zero defect" is the aim of our production, we will continue to produce the high-quality trench cover! Trench cover | Steel Grating | Galvanized Steel Grating test methods a test trench cover appearance. If the trench cover is hand-welded, it will generate a lot of dross trench cover installation, in order not to affect the appearance, may propose to clean up. If the trench cover is machine welded, good or bad edging is a major factor affecting the quality of products. Regularity of the weld, with or without open welding Weld, is the need to look carefully at the eyes. Second, the test trench cover size, diagonal. The national standard for the length and width of precision steel grating is 5mm. Each trench cover the length and width were reduced scale 5mm, easy to install. If each Grand 5mm steel grating trench cover, then, it is estimated the site can not be installed, so find within 5mm shorter steel grating normal (consider installing factor), if you do not need a scale trench cover material, can in advance that I am using CNC welding accuracy can be controlled within 3mm. The diagonal measurement of the product, if the data is equal to the diagonal measurement error was less than 5mm, then the apparent size of basic products on the basic qualification. Third, the test trench cover the pitch and flat steel thickness, trench cover the pitch affects the trench cover the cost of carrying capacity and cost, we GB logo is generally flat in the center of the pitch, the correct measurement method is distance from the center of one flat to another flat in the center of the root, if someone tells you it should be the distance from the flat edge to the other edge of the root flat, that is wrong. The thickness of the largest flat steel flat steel thickness national standards may be error + -0.25mm, generally thick HDG will increase the thickness of the ah, so you have to use calipers card data does not exceed 0.25mm product is qualified. Gold Wire Mesh Products Co., Ltd. Hebei Airlines in a "people-oriented, quality for survival," the purpose, strictly control the quality of products, customers are welcome to visit our company, expand make. Anping trench cover, trench cover, Hebei Airlines gold trench cover provided by Gold Wire Mesh Products Co., Ltd. Hebei Airlines. Hebei Airlines Gold Wire Mesh Products Co. (www.hbhangjin.com) strong, credible, Hengshui in Hebei wire mesh industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead you to join into the Hebei Airlines gold and glory, for a better future!